r 402 ] 
■only a part of the blood had its difpofition to coagu- 
late leflenea, as in experiment XV. in which fome 
of the blood remained fluid and tranfparent, where 
thofe ftreaks appeared, for fome time after the co- 
agulation had begun in other parts of the furface. 
Now whether in thofe cafes there had been the fame 
difference before the vein was opened, or whether 
the whole blood had not been of the inflammatory 
kind, before venefection, and a part of it was 
changed as it ran out, or as foon as the general ful- 
nefs was diminifhed, may be a queflion ; but the 
probability, I think, is much in favour of its being 
changed during the time of the evacuation, from 
what was obferved in the laft related experiments. 
When I had obferved that this difpofition of the 
lymph to coagulate was increafed by bleeding, or by 
-weakening the adtion of the blood-veflels, it occurred 
to me, that poflibly in thofe cafes where the body 
was very -weak, the difpofition to coagulate might be 
fo much increafed, that inftead of being three or 
four minutes in beginning to do it, after it is let out 
of the veins (as is the cafe in people in health) it 
might coagulate in lefs time, or almoft inftantane- 
oufly j for I imagined, that unlefs this took place, we 
could hardly conceive how the blood fhould ever 
have time to coagulate in ruptured veflels, fo as to 
flop haemorrhages, as it is believed to do. And upon 
this occafion I recolledfed an obfervation of Dr. 
Hunter’s, which is “ that the faintnefs which comes 
“ on after haemorrhages, inftead of alarming the by- _ 
“ ftanders, and making them fupport the patient by 
<{ flimulating medicines, as fpirits of hartfhorn and 
* { cordials., fhould be looked upon as falutary ; as it 
" feems 
